Exercise rig



FIG. 1 is a front isometric view of an exercise rig showing our new design in an environment of use;

FIG. 2 is a front isometric view of the exercise rig without the environmental structures shown in FIG. 1;

FIG. 3 is a left side view of the design as shown in FIG. 2, the right side view is a mirror image of the left side;

FIG. 4 is a front end view of the design as shown in FIG. 2, the rear side view is a mirror image of the front side;

FIG. 5 is a top view of the design as shown in FIG. 2; and,

FIG. 6 is a bottom view of the design as shown in FIG. 2.

The broken line showing of portions of the exercise rig depicts environment and forms no part of the claim. 

CLAIM The ornamental design for an exercise rig, as shown and described. 